Synthetic Resin Bottle Pressure Reduction Panels
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Solution Overview
Problem
Synthetic resin bottles with pressure reduction absorbing panels struggle to maintain a cylindrical shape appearance when a label is attached, as existing designs often result in non-uniform deformation and a polygonal appearance due to internal pressure changes.
Innovation Solution
The design features four pressure reduction absorbing panels arranged at equal intervals with arc-shaped column portions that constitute 55% to 75% of the true circle's circumferential length, ensuring both effective pressure absorption and a cylindrical shape appearance when a label is attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure reduction absorbing panels are provided in the body section, then pressure reduction absorbing performance is improved, but the appearance of the body section becomes non-cylindrical and deformed
Solution Approach 1:
The body section is segmented into multiple regions: pressure reduction absorbing panels are placed only in specific circumferential positions while leaving column portions with arc-shaped wall surfaces in other positions. This segmentation allows the bottle to absorb pressure reduction effectively while maintaining a cylindrical appearance from most viewing angles.
Solution Approach 2:
Different parts of the body section have different structural qualities: pressure reduction absorbing panels are provided locally at specific positions to handle pressure changes, while column portions with smooth arc-shaped surfaces are provided at other positions to maintain the cylindrical appearance. This local differentiation resolves the contradiction between functional performance and aesthetic appearance.
2Reliability
If pressure reduction absorbing panels are arranged in the body section, then pressure reduction absorption is effective, but the body section exhibits a polygonal appearance instead of circular
Solution Approach 1:
Instead of providing pressure reduction absorbing panels across the entire body section, the invention applies them only partially at specific circumferential positions. The column portions with arc-shaped surfaces occupy a sufficient portion of the circumference to maintain the visual impression of a circular shape, while the pressure reduction panels are concentrated in limited areas to provide adequate pressure absorption functionality.
3Strength
If circumferential grooves are formed in parallel in the height direction, then reinforcing performance is improved, but the appearance becomes non-uniform and distorted
Solution Approach 1:
Reinforcing structures are provided locally within the pressure reduction absorbing panels rather than uniformly across the entire body section. The column portions maintain smooth, uniform appearances without grooves, while the pressure reduction panels contain the necessary reinforcing features to maintain structural integrity during pressure changes.
Data Source
AI summary
A synthetic resin bottle, which has a pressure reduction absorbing performance and which exhibits a cylindrical shape in which the appearance of the body section to which the label is attached is similar to a perfect circle, is provided. A synthetic resin bottle 1 having cylindrical body section 3 has four pressure reduction absorbing panels 8 arranged at equal intervals in body section 3, and column portions 9 each having an arc-shaped wall surface 9a arranged between pressure reduction absorbing panels 8. Arc-shaped wall surface 9a of column portion 9 in a cross section of body section 3 constitutes a part of a virtual single true circle 10. Total circumferential length of arc-shaped wall surfaces 9a of column portions 9 is 55% to 75% of entire circumferential length of true circle 10.